In Chapters 11-19 are Pip's feelings towards Joe are selfish are understandable?

In Chapter 11-19, Pip's relationship with Joe begins to change. Once a father figure, mentor, friend, and family member, Joe is now Pip's employer per se.... he is teaching him the trade, preparing him for adulthood and the ability to make a living. Likely, Joe hopes that Pip will take over the forge. Pip, however, has no interest in Joe's lifestyle or occupation, and he almost resents Miss Havisham's money for his apprenticeship. Pip wants to climb the social ladder, be a gentleman, be worthy of Estella, and there is nothing about Joe that will help him to achieve his desires.

After learning that his life is to change, Pip's perspective changes.... Jagger's announcement, Pip's being anonymously sponsored, all of these things cause yet another change. From the moment of Jagger's announcement, the relationship between he and Joe and Biddy transforms once again. In essence, Jagger's news fulfills the vanity that had been creeping up in Pip since he first worked at Miss Havisham's. That is, he thinks himself better, more intelligent, more qualified than the life which he was leading with Biddy and Joe. As the end of the chapter makes clear, however, Pip has marginalized himself with this vanity and made himself lonely.

In context, Pip's feeling about Joe, as they change and transform, are not understandable. Joe is Joe, he is steady, loving, caring, and loyal. He deserves Pip's complete respect at all times.